Gaya APA
Freeman, Kenneth. (1954).
Helping children understand science .
New York:
Holt, Rinehart and Winston.
Gaya Chicago
Freeman, Kenneth.
Helping children understand science.
New York:
Holt, Rinehart and Winston,
1954.
Text.
Gaya MLA
Freeman, Kenneth.
Helping children understand science.
New York:
Holt, Rinehart and Winston,
1954.
Text.
Gaya Turabian
Freeman, Kenneth.
Helping children understand science.
New York:
Holt, Rinehart and Winston,
1954.
Print.